Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Monitoring Technique of Pumpkin Fruit Flies Using Terpinyl Acetate-Protein Diet Lure and Development of Its Spraying Formulation for The Fly Control

Terpinyl acetate-단백질먹이 유인제를 이용한 호박과실파리류 연중발생 모니터링 기술 및 살포용 방제 제형 개발

  • Kim, Yonggyun (Department of Plant Medicals, Andong National University) ;
  • Ahn, Jeong Joon (Research Institute of Climate Change and Agriculture, National Institute of Horticultural and Herbal Science, Rural Development Administration)
  • 김용균 (안동대학교 식물의학과) ;
  • 안정준 (농촌진흥청 국립원예특작과학원 온난화대응농업연구소)
  • Received : 2019.11.17
  • Accepted : 2019.12.19
  • Published : 2020.03.01
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Abstract

Two tephritid fruit flies are infesting pumpkins in Korea. Both are classified into genus of Zeugodacus. The striped fruit fly, Z. scutellata, males are attracted to a lure called Cuelure (CL), which has been used to monitor the occurrence of this fruit fly in the crop field. In contrast, no effective male lure was not developed to monitor the pumpkin fruit fly, Z. depressa. Protein diet lure has been used to attract females of most fruit flies. The addition of terpinyl acetate (TA) was effective to increase the attractiveness of Z. depressa. This study aimed to monitor the occurrence of Z. depressa in pumpkin field with TA-protein diet lure. To validate the efficiency of TA-protein diet lure, Z. scutellata was monitored in a year of 2019 using CL and TA-protein diet lures, and the yearly monitoring data were compared. The occurrence patterns derived from both lures were similar except late season after October. The extended catches of TA-protein diet lure might be explained by the adult diapause induction of Z. scutellata at late September. Monitoring Z. depressa with TA-protein diet lure gave two peaks at mid July and August-September, in which more than 80% catches were females. Based on the attractiveness of TA-protein diet lure, its wettable powder with an addition of spinosad insecticide was formulated and sprayed to pumpkin crops. After 7 days post-spray, the control efficacy recorded more than 70%. However, the control efficacies decreased as the time progressed after the spray. These results demonstrated the application of TA-protein diet lure for monitoring occurrence of Z. depressa in pumpkin-cultivating field conditions. The wettable powder containing spinosad can be applied to develop a new control agent against two pumpkin fruit flies.

국내에 호박을 가해하는 두 과실파리는 Zeugodacus 속으로 분류된다. 호박꽃과실파리(Z. scutellata) 수컷은 큐루어(Cuelure)에 유인되어 포장에서 이 과실파리의 발생을 모니터링 하는 데 이용된다. 이에 반해, 호박과실파리(Z. depressa) 수컷을 유인하는 물질은 아직 알려지지 않았다. 단백질 먹이 유인제가 대부분의 과실파리를 유인하게 되는데 여기에 terpinyl acetate (TA)를 추가하여 호박과실파리의 유인력을 높였다. 본 연구는 TA-단백질먹이 유인제를 이용하여 호박 재배지에서 호박과실파리의 연중 발생을 모니터링 하는 데 목적을 두었다. TA-단백질먹이 유인제의 효율성을 증명하기 위해 호박꽃과실파리를 대상으로 큐루어와 TA-단백질먹이 유인제를 이용하여 2019년 한 해 동안 발생을 모니터링하고 이 두 유인제로 얻어진 연중 모니터링 자료를 비교하였다. 두 유인제를 이용한 호박꽃과실파리의 연중 발생 패턴은 10월 하순을 제외하면 유사하였다. TA-단백질먹이 유인제는 10월 하순 시기에도 지속적인 호박꽃과실파리의 포획을 보였는데 이는 9월 하순 이후 호박꽃과실파리의 성충 휴면 유기에 따른 유인 행동 차이로 이해되고 있다. TA-단백질먹이 유인제를 이용한 호박과실파리의 연중 모니터링은 크게 두 개의 발생 최성기를 보여 하나는 7월 중순이고 다른 하나는 8~9월에 나타나며 포획된 개체들의 80% 이상이 암컷이었다. 이러한 TA-단백질먹이 유인제의 두 과실파리류에 대한 유인 효과를 바탕으로 스피노사드(spinosad) 살충제를 가미한 수화제를 제조하고 호박 재배지에 살포하였다. 처리 7 일경과 후 약 70% 이상의 방제 효과를 기록하였다. 그러나 이 방제 효과는 처리 이후 기간이 경과하면서 낮아지는 경향을 나타냈다. 이상의 결과는 TA-단백질먹이 유인제를 이용하여 야외 호박 재배지에서 호박과실파리의 연중 모니터링이 가능하다는 것을 보여 주었다. 또한 스피노사드를 가미한 TA-단백질먹이 유살제가 이들 호박과실파리류 방제에 응용될 수 있다는 것을 제시하고 있다.

Keywords

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